Here's why:
* Acids have a pH less than 7, meaning they release hydrogen ions (H+) in solution.
* Alkalies (also called bases) have a pH greater than 7, meaning they release hydroxide ions (OH-) in solution.
* Neutral substances have a pH of 7, meaning they have an equal balance of hydrogen and hydroxide ions.
Examples of neutral substances include:
* Pure water
* Table salt (NaCl)
* Sugar (C12H22O11)
It's important to note that the terms "acid" and "alkali" are sometimes used interchangeably with "acid" and "base," but they are not strictly the same.
* Acid is a broader term that refers to any substance that releases hydrogen ions (H+) in solution.
* Base is also a broader term that refers to any substance that releases hydroxide ions (OH-) in solution.
* Alkali is a specific type of base that is soluble in water.
So, while we might say something is "not an acid or alkali," it's more precise to say it is "neutral" or "neither acidic nor alkaline."
